Pipe-clamp.



J. DICK.

PIPE CLAMP.

APPLICATION FILED Mule. 1911.

. 1,293,051"; Patented Feb.4,1919.

IN VEN TOR.

UNITE STATES PATENT Fares.

JOSEPH DICK, OF CANTON, OHIO, ASSIGN'OR TO THE JOSEPH DICK MANUFACTURING COMPANY, OF CANTON, OHIO, A CORPORATION OF OHIO.

PIPE-CLAMP.

Specification of Letters Patent.

Patented Feb. 4, 1919.

0 Application filed May 18, 1917. Serial No. 169,443.

To all whom it may concern:

Be it known that I, JOSEPH Drox, a citizen of the United States, and resident of Canton, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Pipe-Clamps, of which the following is a specification.

The invention relates to fodder cutter discharge pipes composed of overlapping sheet metal sections clamped together, and has more particular reference to the means for joining the sections together for preventlng a telescoping of the sections in a standing pipe, or a separation of the sections in a pendent pipe.

In a discharge pipe leading upward from a fodder cutter, thence curved over the rim of a silo and extending downward for discharging therein, the curved or deflecting portion of the pipe may either rest upon the rim of the silo, or may stand free above the same. In the first case the ascending portion of the pipe, or some of its upper sections, may han or depend from a support on the rim of tile silo, and in the latter case the ascending portion of the pipe, or some of its lower sections, are supported by standing upon the fodder cutter. In the first event, it is diflicult if not impossible, to clamp the overlapping ends of the pendent sections so securely that they will not pull apart, and in the latter event it is likewise difficult, if not impossible, to prevent the standing sections from telescoping upon each other.

These difficulties are overcome by forming each pipe section with a circumferentially expansible lower end adapted to overlap the upper end of the next lower section, and providing means for clamping the sections together by contracting the expansible ends of the sections; and by providing a stop flange near the upper end of each pipe section, which forms an abutment for the overlapping lower end of the next upper section for preventing a further telescoping of the same; and by combining a crank arm with the clamping means for automatically engaging the stop flange and preventing a separation of the pipe section when the overlapping ends are clamped together.

A preferred embodiment of the invention is illustrated in the accompanying drawings forming a part hereof, in which Figure 1 is a side elevation of a discharge pipe leading upward from a fodder cutter and thence downward into a silo;

Fig. 2, a fragmentary front elevation of the overlapping ends of two pipe sections, showing the improved clamp applied thereto;

Fig. 3, a detached perspective view of the clamping mechanism;

Fig. 1, a detached perspective view of the stop flange; and

'Fig. 5, a detached perspective view of the wrench or handle for operating the clamp ing mechanism.

. imilar numerals refer to similar parts throughout the drawings.

The discharge pipe which leads from a fodder cutter 1 upwardly into a silo 2, usually consists of an ascending elevating division 3, a curved deflecting division 4,

and a discharge or distributing division 5.

The ascending division 3 is preferably composed of a plurality of short pipe sections 6 joined together by overlapping and clamping the lower end of each section upon the upper end of the next lower section; and the curved deflecting division 4 may either rest upon the rim 7 of the silo wall 8, as shown in Fig. 1, or may merely lean against or stand freely above the same, according to the relative length of the pipe and the height of the silo wall. The discharge or distributing division of the pipe may be composed of a lurality of sections 9 hanging one from anot er, as by means of the chain links 9 as shown in Fig. 1.

The several sections 6 of the ascending division of the pipe are preferably made of laterally curved sheets having their side edges overlapped and joined together as by means of rivets 10, excepting that the lower end portion of these overlapping edges are not secured together, so that the same may be expanded for telescoping over the upper end of another section and then be contracted by clamping around the same.

The clamping mechanism preferably comprises the rock shaft 11 mounted in bearings 12 formed on the bracket 13 which is secured by rivets 15 to the lower end of the pipe section adjacent to one of the overlapping side edges thereof. Upon the rock shaft 11 and preferably integral therewith, is provided the crank journal 16, which is preferably located between the bearings 12 as shown; and

at one end of the crank journal 16 is formed or secured the block 17 which is preferably formed square and provided with the aperture 18 for receiving the handle end 19 of the wrench 20.

A connecting link or bar 21 is pivoted at one end upon the crank journal 16 and at the other end is adjustably engaged with the bracket 22 as by passing through the aperture 23 therein. The outer end of the link is provided with the nut 24 engaging with the outer side of the bracket and adapted to be adjusted by means of the wrench 20 having jaws 25; and the bracket is secured, as by the rivets 26, to the lower end of the pipe section at a substantial distance beyond and on the other side of the overlapping edges thereof.

By this construction and arrangement it is evident that by an adjustment of the nut on the one end of the connecting rod, the rock shaft may be rotated by the wrench either to permit an expansionof the lower end of the pipe section, or to contract the same by a clamping action; and the parts are so arranged that at the completion of the clamping movement, the axis of the crank journal 16 will be rotated to carry the tension line of the connecting rod inside the axis of the rock shaft, thereby locking the parts in their clamped relation.

The lower end 11 of the rock shaft is extended beyond the lower end of the pipe ,section, and the crank arm 27 is formed or secured on the end of the rock shaft at a spaced interval beyond the end of the pipe section.

A stop flange 28 is formed or secured on the upper end portion of each pipe section as by means of the ears 29 and the rivets 30, and this flange is located at the proper distance from the upperend of the pipe section so as to form a stop for the lower end of an adjoining section when the same is telescoped thereon, in which relation of the parts, the crank arm 27 is adapted to engage the lower side of the flange by the rotation of the rock shaft into its clamping posi tion, as shown in Figs. 2 and 3; so that the operation of the clamping mechanism automatically locks the pipe sections together.

The lower face 31 of the stop flange may be convexed in its middle portion to form a cam, and the parts are preferably so proportioned and arranged that the crank arm 27 will engage the side portion of the flange before the lower end of the upper pipe section abuts the stop flange of the lower pipe section, so that these two parts will be drawn and abutted together by the action of the Copies of this patent may be obtained for crank arm upon the cam surface of the stop flange. It is also preferred to locate the lower side of the bearing 12 flush with the lower end of the upper pipe section,so that this bearing will form a more positive abutment against the stop flange 28.

By this construction and arrangement, it is evident that when the pipe sections are assembled as described, and the overlapping end of one section is clamped upon the telescoped end of another section, the operation of the clamping means will automatically lock the parts together and will positively prevent a further telescoping or a separation of the pipe sections.

I claim:

1. A discharge pipe composed of a pin 2. A discharge pipe composed of a plurality of pipe sections each having a circumferentially expansible end adapted to overlap the opposed end of the adjoining section, means for contracting the .expansible ends of the sections forclamping the sections together, and stop means operable by the clamping means to prevent relative longitudinal movement of the sections.

3. A. discharge pipe composed of a plurality of pipe sections each having acircumferentially expansible end adapted to overlap the opposed end of the adjoining section, means for contracting the expansible ends of the sections for clamping the sections together, a stop flange on said adjoining section, and a rock shaft journaled on the lower end of the overlapping section having a. crank arm adapted to be swung into engagement with the stopv flange to prevent relative longitudinal movement of the adjoining'sections. v

4. Adischarge pipe composed of a plurality of sections having overlapping edges movable laterally at one end, a link having one end'secured to one of said edges, a member journaled on the other of said edges and having the other end of the 1ink'ec'centri cally connected therewith, a stop flange on said adjoining section adapted to be engaged on one side by the overlapping section, and an arm on the journaled member adapted to be swung into locking engagement with the other side of the'stop flange.

JOSEPH DICK.

five cents each, by addressing the Commissioner oi? Patents,

Washingtomlfl. C. 

